By Matthew Joseph Mottram
The winner of UCL's annual HEP thesis prize, this paintings describes an research of the information from the second one flight of the Antarctica Impulsive temporary Antenna (ANITA). ANITA is a balloon-borne scan that searches for radio indications originating from ultra-high strength neutrinos and cosmic rays interacting with the Antarctic ice or air. the hunt for ultrahigh strength neutrinos of astrophysical starting place is among the notable experimental demanding situations of the twenty first century. The ANITA test used to be designed to be the main delicate tool to ultra-high strength neutrinos that originate from the interactions of cosmic rays with the cosmic microwave heritage. The technique and result of the neutrino and cosmic ray searches are awarded within the thesis.
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Additional info for A Search for Ultra-High Energy Neutrinos and Cosmic-Rays with ANITA-2
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Askaryan predicted that the total charge imbalance of the shower would be around 20 %. This EM shower will have a transverse dimension that is characterised by the Moliére radius, R M , that is dependent on the interaction medium: R M = X 0 21. 3) where X 0 is the radiation length5 and E c is the critical energy6 of the interaction medium. For ice, X 0 ∼ 40 cm and E c ∼ 56 MeV, leading to R M = O(10). The shower will develop over several metres within the ice, though the instantaneous longitudinal dimension of the particle bunch (that is, the dimension along the shower axis) will be O(1) cm.
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